Vacuum sweeper construction



March 20, 1945. H. A. KRoENLElN VACUUM SWEEPER CONSTRUCTION Filed Nov.9, 1938v closed in my result in better the appended claims.

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Patented Mar. 20, 1945 Nr vOFFICE j VACUUM SWEEPER JONSTRUCTION I HenryA.'Kroenlein, Jackson,

The Filtex Corporation, poration of Michigan rApplication November 9,1938, Serial No. 239,610

I Cl. -16) 4 Claims.

The present invention relates to improvements in the construction of theso-called cylinder type vacuum sweeper; being especially concerned withthe structural details of the vacuum sweeper dis- D80,973, filedNovember 9, 1938, now Design Patent No.- 113,531, granted February 28,1939.

Objects of the present invention reside in the details of constructionhereinafter set forth. and the combination and arrangement of partswhich appearance, improved performance, increasedutility, and areduction inthe cost of manufacture. The invention is defined in In thedrawing, l

Fig. 1 is a longitudinal cross-sectional view of the vacuum sweeperconstruction,

Fig. 2 is a fragmentary cross-sectional view of a modified mountingring, and

Fig. 3 is a fragmentary cross-sectional view of the embodiment of Fig. 1showing the tie rod assembly.

design application Serial No.

Referring to the drawing,'the vacuum sweeper v shown in Fig. 1 is a wellknown cylinder type generally designated by reference character I8comprising front and rear heads I2 and I4 preferablyof cast metal, and athe front of the hollow cylinder I6. For inexpensive construction, thecylinder' I6 may b e of fibrous tube construction with some ysuitablenishing surface suchas imitation leather or the opposite ends of thecylinder I6 tele' scope with cylindrical flanges I8 and 28. t

Clamped between one end of the cylinder I6 peller 32 ina at .the forward38 having a filter Supported .posite ends of the shown, each rod 88 isthreaded at 86 into a corrubber bo Mich., assxgnor to Jackson, Mich., acor- 'Ihe unit 26 includes a bracket 62--whi'chprovides a bearing 54 forthe shaft 56 and supported for` the motor 68. AA `housing 68 is securedto the bracket 52 by screws 62 and closes one end of the unit 26 exceptfor an outlet open-ing 64 corresponding to the intake opening 58. Withthe hinged closure 66 closing the opening 68 in the head I4, air fromthe outlet 64 will discharge into the chamber 18 and iilter out throughthe openings ,'I2. When the device is to be used as an air blower. a'connecter is fitted into the outlet 64 as shown in dotted outline, theclosure 66 being hinged out of the way. The switch and closing the motorcircuit, preferably, takes the form vof a depressible foot plate I4hinged at 16 and resting against a push on and off switch I8 of wellknown construction.

'I'he head I4, the cylinder I6, and the unit 26 are held in assembledrelation through a pair of concealed tie rods 88 located upon oppositesides. of the cylinder I6. The flange portions I8 and 28 have thickenedbosses 82 and 84 in which oprods are anchored. As

respondingly threaded hole 88 in the boss 84. The opposite ends of therods 88 are also threaded at 98 to receive a cylindrical nut 92 having ascrew drive slot 84 therein. With the nut seated vagainst the shoulder96, rotation thereof will clamp the mountingring 24 and the cylinder I6firmly between the flange I8 and shoulder 22. It will be understood thatthe nuts 92 are tightened with the head I2 in a hinged position. As Iconsider it desirable to have a resilient bumper entirely around thesweeper,` I prefer to house the rods 88 in sections 98 of the rubberbumper which` extend along the sides of the cylinder I6. Thus the rods88 are covered by the bumper sections while functioning to support thesame. The heads I2 and I4 have embracing channels |88 and |82 in whichbumper sections |84 and |86 are supported. To secure these sections inplace there is a wire core |88 which is tapped at opposite ends at II8to receive anchoring'screw I I2.

In the' modication of Fig. 2, the mounting ring ||8 comprises a rubberring portion |I4 and an outer andl inner metal ferrule portions I|6 and||8. With this arrangementV the entire support given the pump aud'motoruniti is through the Itshould be apparent from the foregoing descriptionthat I have provided a very simple assembly. 'I'he tie rods 88 hold themajor portion e construction in an assembled relation in- \f0r opening'Where it may arrangements that have been heretoforeproposed havenotgbeen entirelysatisfactory for-the 30- Time-mettent BeerAvAILABLecorY ol ding he air pump and motor unit.v With the head l2 inclosed position, the tie rods 80 and associated structure are completelyconcealed. In addition, the rods function to support the bumper sectionsextending along the cylinder portion I6. Through the use of the tie rods8D and the character of the reinforcement afforded by the partswithwhich the ends of the cylinder I6 telescope, the cylinder I6 may beineigpensiyeiy manufacturca frame aifdartube ortneiikefmakingn possiblevto'provide a vacuum sweepr'of extremely light and rigid construction.

In addition to providing a construction in which all securing means forin an assembled relation are .hldinerthez .iti-1,11@` hidden' as in thecase of bumper sections 9d, '.the-supporting andisecuring constructionfor'theibumperesectons* |04 and |06 are likewise concealed. Theserefinements in construction -,giyegawfyery;pleasing 20 eect to the eyeand are very much in with present day trend in design. Asitisimpracticalto place theon-andp keeping switch on `theoperatingfhandlef Ithrough"which 'the nozzlejis manipulated over theYsurf ace tobe jcleaned', it fis the practice to ylocate the' 'motorshoulder portions and portions with which oppo.. site ends of said tubetelescope, an air pump and motor unit adapted to be concentricallysupported within said tube having a mounting ring struc ture, saidmounting structure being located between one of said shoulder portionsand one end of said tube, and tie rods extending longitudinally of saidtube and anchored in said reinforcingstructure at oppositeends of saidtube for Fhoming n neementsj@assembled relation and *for* clamping saidmounting 4structure in position portion,

"merits infassembled relation,

between a shoulder and an end of said tube.

*i 2. A vacuum sweeper of the type described rcomprising gan'. outerbrous elongated tubular talhead portion located at one endof-sai'dj1tube a".rnetal flange portion located at eppositef n'd'lofsaid tube, tie rods extending ongitudinall'yb'ffsaid tube and locatedupon the .-.outside thereof anchored at opposite ends to said securingsaid elehead and yflange portion for and bumper portionssupporteduponsaid tie rods.

- whereinpthe exposedportions of said'tie rods are switch upon thehousing ofthe sweeper structure reason that thev switch`has receivedconsiderable abuse from f oot manipulation. In my construcbe manipulatedby. theffoot. The

tion I havefprovided what mightfbe termeda protective shell for A theswitch l proper which at `Vthe ,same tinji'e becomes anoperatiriE-leven-facilitati'ngthe operatinfo the; switch as itaftords a'considerable' area' upon 'which pressure may be applied for turning Vthevswitch on and off. f

sweeper 'ef ,thelftype described dmy.inventiom'jwnet ,I desire entirelyhousedjby said bumper portions.V

sweeper of the type described comprising a central tubular portion,` apair of headsfolosin'gopposite endsof said tubular portion, a pluralityof tie rods extending longitudinally o f said ,tubular portion disposedon .the outside thereof `f orfsecurin'g one of saidheads tofone'end ofsaid tubular portion. the 'other of I .Saidheads being rernovable 'toafford access to comprisngan elongated tube, reinforcing' strucoppositeends of said tube having supported by sa the interior of saidtubularportion, said other head'in' position concealing o ne end of `saidtie-rods and the other end of said tie' rods being anchored in said. firsthead.v and bumper means id'ti'e rods 'andd1sposed on the outside of.said-tubular expsedl'en h o! said tierods.

narrarl LA; KRONLEIN.

portion for concealing the

